Zithromax Z-Pak and appetite

I've been sick for 22 days. I was told I have tonsillitis and was given Amoxicillin but did not get better. I had a cough that did not go away. I went back in and was told I had bronchitis even though I had no fever. I was given the 6 pill Z-Pak treatment - 2 pills the first day, and then 1 pill each of the next 4 days. They had me stop the Amoxicillin. Both all day yesterday and all day today I've had diarrhea. Watery and frequent. Not fun. I also have no appetite, not sure if that is from the bronchitis or the drugs. Half a serving of soup all day and I had to stop eating. I recommend the soft wipes with aloe in them, as I am very sore back there. However, I must say, if my bronchitis is gone in 2 or 3 days, then the diarrhea was worth it. I can't stand being sick any longer, and can't stand the congestion that is in my chest!!! I've only taken the Z-Pak once before, a while ago, I forget if there were side effects, but I seem to remember it worked.

While I have taken it before, I don't recall having anything but very mild side effects (maybe a little discomfort in my belly). This time, however, it is different and I am owing it to the beauty of aging. I just took the second of the three pills (and yes, I've had the three pill one before). My bronchitis is clearing but this afternoon I had really bad abdominal pain and I have a continuous headache in the back of my head, where my spinal cord ends. It is not as bad (so far) as the one I had with Biaxin (I refuse to take that). The only bright side is that it made it a really good time to join Weight Watchers because I do not have much appetite. I was able to sleep last night, at least, because my cough decreased. The verdict is still out on whether I would do this again. Problem is, I am allergic to Penicillin.